Fix issue when Dockerfile present but BUILDPACK_URL is set
Fix issue when Dockerfile present but BUILDPACK_URL is set

amaltson/dokku,alexquick/dokku,expa/dokku,expa/dokku,sseemayer/dokku,codeconfab/dokku,Evlos/dokku,econya/dokku,elia/dokku,johnfraney/dokku,Evlos/dokku,sseemayer/dokku,johnfraney/dokku,elia/dokku,amaltson/dokku,progrium/dokku,elia/dokku,johnfraney/dokku,claytonbrown/dokku,econya/dokku,sseemayer/dokku,econya/dokku,Evlos/dokku,expa/dokku,Evlos/dokku,dokku/dokku,amaltson/dokku,jimjag/dokku,johnfraney/dokku,elia/dokku,alexquick/dokku,amaltson/dokku,claytonbrown/dokku,fruitl00p/dokku,claytonbrown/dokku,Evlos/dokku,econya/dokku,dokku/dokku,codeconfab/dokku,alexquick/dokku,sseemayer/dokku,jimjag/dokku,expa/dokku,progrium/dokku,expa/dokku,dokku/dokku,progrium/dokku,amaltson/dokku,econya/dokku,sseemayer/dokku,jimjag/dokku,fruitl00p/dokku,jimjag/dokku,dokku/dokku,fruitl00p/dokku,fruitl00p/dokku,expa/dokku,elia/dokku,johnfraney/dokku,progrium/dokku,alexquick/dokku,jimjag/dokku,claytonbrown/dokku,amaltson/dokku,fruitl00p/dokku,fruitl00p/dokku,claytonbrown/dokku,Evlos/dokku,fruitl00p/dokku,elia/dokku,econya/dokku,codeconfab/dokku,jimjag/dokku,elia/dokku,codeconfab/dokku,fruitl00p/dokku,johnfraney/dokku,dokku/dokku,Evlos/dokku,econya/dokku,codeconfab/dokku,codeconfab/dokku,alexquick/dokku,claytonbrown/dokku,johnfraney/dokku,alexquick/dokku,elia/dokku,Evlos/dokku,alexquick/dokku,dokku/dokku,progrium/dokku,progrium/dokku,dokku/dokku,codeconfab/dokku,dokku/dokku,jimjag/dokku,expa/dokku,expa/dokku,amaltson/dokku,amaltson/dokku,sseemayer/dokku,jimjag/dokku,econya/dokku,johnfraney/dokku,claytonbrown/dokku,codeconfab/dokku,sseemayer/dokku,sseemayer/dokku,claytonbrown/dokku,progrium/dokku,progrium/dokku,alexquick/dokku